Effective Field Theories for Topological states of Matter
... in some simple cases they are known to be ground states of a model Hamiltonian. In the last section, I will briefly describe one important approach based on conformal field theory. The methods just mentioned are all describing the microscopic physics, but there are complementary approaches based on ...
... in some simple cases they are known to be ground states of a model Hamiltonian. In the last section, I will briefly describe one important approach based on conformal field theory. The methods just mentioned are all describing the microscopic physics, but there are complementary approaches based on ...
Phys. Rev. Lett. 103, 265302
... where H0 is the single site zero hopping contribution to (1), and z is the coordination. We minimize (3) to obtain the phase diagram in Fig. 2, where the symmetry under T ! 2 T reflects invariance of the Hamiltonian upon particle-hole and interchange operations, a $ ay , T ! m þ U T , a# ...
... where H0 is the single site zero hopping contribution to (1), and z is the coordination. We minimize (3) to obtain the phase diagram in Fig. 2, where the symmetry under T ! 2 T reflects invariance of the Hamiltonian upon particle-hole and interchange operations, a $ ay , T ! m þ U T , a# ...
Document
... component to be electrically neutral – We will discuss another way to break these symmetries tomorrow Often, a calculation that looks terrible in the broken symmetry is simple if you consider the unbroken symmetry basis. ...
... component to be electrically neutral – We will discuss another way to break these symmetries tomorrow Often, a calculation that looks terrible in the broken symmetry is simple if you consider the unbroken symmetry basis. ...
Review on Nucleon Spin Structure
... electron, proton and em field, under the heavy proton approximation, one can derive a Dirac equation and a Hamiltonian for electron and proved that the time evolution operator is different from the Hamiltonian exactly as we obtained phenomenologically. The nonrelativistic approximation is the Schroe ...
... electron, proton and em field, under the heavy proton approximation, one can derive a Dirac equation and a Hamiltonian for electron and proved that the time evolution operator is different from the Hamiltonian exactly as we obtained phenomenologically. The nonrelativistic approximation is the Schroe ...
PHYS 1443 * Section 501 Lecture #1
... • We have come a long way on SM to describe how the universe works but we are not done yet! Actually a long way from done! • Why are the masses of quarks, leptons and vector bosons the way they are? • Why are there three families of fundamental particles? • What gives the particle their masses? • Do ...
... • We have come a long way on SM to describe how the universe works but we are not done yet! Actually a long way from done! • Why are the masses of quarks, leptons and vector bosons the way they are? • Why are there three families of fundamental particles? • What gives the particle their masses? • Do ...
Euclidean Field Theory - Department of Mathematical Sciences
... We can now do a Wick rotation, and then interpret the exponent in (1.7) as the potential of a field φ in one extra dimension. The path integral then computes for us the classical partition sum of a model at inverse temperature β = 1/h̄. The first relation is a bit more tricky to generalise to field ...
... We can now do a Wick rotation, and then interpret the exponent in (1.7) as the potential of a field φ in one extra dimension. The path integral then computes for us the classical partition sum of a model at inverse temperature β = 1/h̄. The first relation is a bit more tricky to generalise to field ...
Quantum Field Theories in Curved Spacetime - Unitn
... Kruskal spacetime (the result applies also to any globally hyperbolic spacetimes containing the structure of bifurcate Killing horizon generated by a global Killing field B as in Minkowski spacetime). Suppose that a state ω exists which is invariant under the one-parameter group of isometries associ ...
... Kruskal spacetime (the result applies also to any globally hyperbolic spacetimes containing the structure of bifurcate Killing horizon generated by a global Killing field B as in Minkowski spacetime). Suppose that a state ω exists which is invariant under the one-parameter group of isometries associ ...
Dark Z boson and Parity Violation
... Dark Photon bounds (APEX, MAMI, etc) apply to Dark Z as well, in most parameter space of interest. (Around the bounds, |ε| >> |εZ|, where [Dark Z coupling] ≈ [Dark Photon coupling].) In addition, since Dark Z has “axial coupling”, it implies new features that Dark Photon does not show. (i) Parity Vi ...
... Dark Photon bounds (APEX, MAMI, etc) apply to Dark Z as well, in most parameter space of interest. (Around the bounds, |ε| >> |εZ|, where [Dark Z coupling] ≈ [Dark Photon coupling].) In addition, since Dark Z has “axial coupling”, it implies new features that Dark Photon does not show. (i) Parity Vi ...
Particle Physics Today 2
... x SU(2) ?? x U(1) Symmetry group QCD (theory of strong interaction) Theory Invariant under “rotation” of quarks in “colour space” ...
... x SU(2) ?? x U(1) Symmetry group QCD (theory of strong interaction) Theory Invariant under “rotation” of quarks in “colour space” ...
Resonant ionization of shallow donors in electric field Linköping University Post Print
... dependence of the energy of the ground state on the electric field [figure 1(a)]. This dependence exhibits multiple discontinuities, many of which occur at low electric fields and are not observed in the energy versus field dependence of Ref. [4]. We attribute most of the discontinuities occurring a ...
... dependence of the energy of the ground state on the electric field [figure 1(a)]. This dependence exhibits multiple discontinuities, many of which occur at low electric fields and are not observed in the energy versus field dependence of Ref. [4]. We attribute most of the discontinuities occurring a ...
Non-equilibrium and local detection of the normal fraction of a
... well-known sum rule based on gauge invariance imposes that the same limit for the longitudinal susceptibility χL (q, ω) gives exactly unity, 1 = lim lim ...
... well-known sum rule based on gauge invariance imposes that the same limit for the longitudinal susceptibility χL (q, ω) gives exactly unity, 1 = lim lim ...
Deconfined Quantum Critical Points
... The theory of continuous phase transitions is one of the foundations of statistical mechanics and condensed matter theory. A central concept in this theory is that of the ”order parameter”; its nonzero expectation value characterizes a broken symmetry of the Hamiltonian in an ordered phase and it go ...
... The theory of continuous phase transitions is one of the foundations of statistical mechanics and condensed matter theory. A central concept in this theory is that of the ”order parameter”; its nonzero expectation value characterizes a broken symmetry of the Hamiltonian in an ordered phase and it go ...
Document
... In two dimensions, we can view the vortices as point particle excitations of the superfluid. What is the quantum mechanics of these “particles” ? ...
... In two dimensions, we can view the vortices as point particle excitations of the superfluid. What is the quantum mechanics of these “particles” ? ...
Open-Closed String Duality in Field Theory? - damtp
... the two gauge fields on the domain walls, and bare mass2 Tvort R. We also know that the stretched open string is 1/2 BPS in the domain wall worldvolume, ensuring that the lowest mode lies in a short representation of the supersymmetry algebra. There are two possibilities: a vector multiplet or a chi ...
... the two gauge fields on the domain walls, and bare mass2 Tvort R. We also know that the stretched open string is 1/2 BPS in the domain wall worldvolume, ensuring that the lowest mode lies in a short representation of the supersymmetry algebra. There are two possibilities: a vector multiplet or a chi ...
Experimental Observation Of Lepton Pairs Of Invariant Mass Around
... This paper reports the observation of four e+e- pairs which have the signature of a two-body decay of a particle of mass mZ = (95.2 ± 2.5) GeV/c2 . ...
... This paper reports the observation of four e+e- pairs which have the signature of a two-body decay of a particle of mass mZ = (95.2 ± 2.5) GeV/c2 . ...
Lecture 21: Mean Field Theory of Ferromagnetism
... moments of partially filled shells in insulators containing transitional metal ions, conduction electrons) do not interact with each other The assumption about noninteracting magnetic moments must be dropped to describe variety of phenomena caused by magnetic interactions. For instance, some materia ...
... moments of partially filled shells in insulators containing transitional metal ions, conduction electrons) do not interact with each other The assumption about noninteracting magnetic moments must be dropped to describe variety of phenomena caused by magnetic interactions. For instance, some materia ...
Quantum mechanics of electrons in strong magnetic field
... must say that quantized Larmor orbitals are only an approximations to the Landau orbitals which can be obtained only on the basis of the Schrödinger equation. This will be done in the next section. But before doing this we consider briefly the gauge invariance in the quantum mechanics. ...
... must say that quantized Larmor orbitals are only an approximations to the Landau orbitals which can be obtained only on the basis of the Schrödinger equation. This will be done in the next section. But before doing this we consider briefly the gauge invariance in the quantum mechanics. ...
ATLAS and CMS
... mass) but are completely transparent The 80000 crystals in the ECAL have a total mass equivalent to that of ~24 adult African elephants - and are supported by 0.4mm thick structures made from carbon-fibre (in the endcaps) and glass fibre (in the barrel) to a precision of a fraction of a millimetre ...
... mass) but are completely transparent The 80000 crystals in the ECAL have a total mass equivalent to that of ~24 adult African elephants - and are supported by 0.4mm thick structures made from carbon-fibre (in the endcaps) and glass fibre (in the barrel) to a precision of a fraction of a millimetre ...
Progress in year 2000 - Center for Ultracold Atoms
... The study of topological excitations and their stability is an active frontier in the field of quantum degenerate gases. Most studies focused on vortices with one quantum of circulation. In earlier work, we created doubly quantized vortices in a Bose-Einstein condensate [7], but due to technical lim ...
... The study of topological excitations and their stability is an active frontier in the field of quantum degenerate gases. Most studies focused on vortices with one quantum of circulation. In earlier work, we created doubly quantized vortices in a Bose-Einstein condensate [7], but due to technical lim ...
SIMULATION OF TONER PARTICLE MOTION UNDER DYNAMIC
... calculate the trajectory of toner particles under combined dc and ac field conditions. The finite element analysis requires an adaptively refined mesh as well as additional field smoothing (post-solving). The total and instantaneous field inside the print-head is obtained as a weighted sum of two si ...
... calculate the trajectory of toner particles under combined dc and ac field conditions. The finite element analysis requires an adaptively refined mesh as well as additional field smoothing (post-solving). The total and instantaneous field inside the print-head is obtained as a weighted sum of two si ...
Continuous Matrix Product States for Quantum Fields
... [1] and the density matrix renormalization group (DMRG) of White [2] revolutionized the way strongly correlated quantum systems can be simulated and understood. The applicability of those approaches has been better understood during the last 5 years by rephrasing those methods in terms of matrix pro ...
... [1] and the density matrix renormalization group (DMRG) of White [2] revolutionized the way strongly correlated quantum systems can be simulated and understood. The applicability of those approaches has been better understood during the last 5 years by rephrasing those methods in terms of matrix pro ...
Unit 2: The Fundamental Interactions
... color, for example. Physicists have their own identifiers for elementary particles. Called "quantum numbers," these portray attributes of particles that are conserved, such as energy and momentum. Physicists describe one particular characteristic as "spin." The name stemmed from the original interpr ...
... color, for example. Physicists have their own identifiers for elementary particles. Called "quantum numbers," these portray attributes of particles that are conserved, such as energy and momentum. Physicists describe one particular characteristic as "spin." The name stemmed from the original interpr ...